Sputnik reported that the testing facility of the Central Institute of Meteorology of Russia (TsAGI) in the city of Zhukovsky near Moscow allows studying the flight path of aircraft in all mode, including important and even emergency mode, without putting the aircraft or humans at risk.
At one of the buildings, TsAGI has built a closed T-105 vertical wind tunnel, 4.5 m in diameter.
The T-105 wind tunnel is used to test aircraft models. Basically, experts check the plane's ability to perform any spiral - steep or flat - and the pilot's behavior in this mode.
The model can be fixed, or in free flight only hung on thin safety cables. Dinamic sensors provide information about the progress of the test.
Many types of aircraft and helicopters have been tested here. Designer Mikhail Mil once headed this laboratory of TsAGI, and then he created the legendary Soviet helicopter design room.
A few decades later, thanks to the T-105 wind tunnel testing, the plane learned how to perform a spectacular yet extremely risky " tiger snake"rol in the air.
The first person to do this mishap was in 1989, a Soviet test pilot Viktor Pugachev on a Su-27 at an airshow in Le Bourget. After that, this complex and beautiful feedback move was called the tiger snake carrying Pugachev.
Dr. Ruslan Mirgazov - director of TsAGI's helicopter Center - details the wind tunnel that engineers use to test all types of vehicles, including balloons and aerospace landing gear.
Since 1990, we have been working with drones. Experts use our solutions and recommendations - which are often consistent with flight data - to develop the Russian aviation industry. Of course, the wind tunnel has been used to test domestically produced SSJ New and MS-21 aircraft.
ruslan Mirgazov's colleague, Mikhail Golovkin - scientific director of the helicopter center, added that this wind tunnel was built mainly to study the torsion of snails - a dangerous mode - because it needed to find a way to deal with it.
Although snail rotation is a form of air traffic congestion, this is also an extremely risky flight mode. When a sports aircraft, fighter or even a bomb squadron begins to fall from the sky in a spiral shape, the pilot (or crew) can parachute out of the crashed aircraft.
However, the problem became much more serious when a passenger plane began to turn on the ground. With no chance to leave the plane, the pilot had to find a way to get out of this situation.
The helicopter's torsion is another story. That is why each flying vehicle must be tested for flight capability in this mode. And the test must be conducted on the ground in a wind tunnel, as testing in real flights may be too late.
